Oh Geun Tae is a country boy with a booming baritone who is discovered by aspiring singer-songwriter Lee Jang Hui and thrust into the bustling world of Seoul’s iconic folk music café—C’est Si Bon. Unwittingly, he becomes the third member of the yet-to-debut “C’est Si Bon Trio” and the begrudging buffer between two rival musicians—the vocal genius, Song Chang Shik, and the heartthrob, Yoon Hyung Ju. Amidst the smoke and chatter of C’est Si Bon’s youthful clientele, they meet aspiring actress Min Ja Yeong and find themselves completely bewitched. Will their muse inspire them to create legendary music, or tear them apart before they even begin?